Chatham mother-of-two Sally Jones has spoken out about her mission to join jihadist group Islamic State.

The former member of an all-girl punk rock band told how she has taken her youngest son to Syria - and now fears she will never be able to return to Britain.

The interview follows revelations the 45-year-old convert to Islam had married Junaid Hussain, a convicted computer hacker and IS fighter from Birmingham, and posted a number of pro-Isis statements on Twitter - including one in which she is said to have threatened to behead Christians.

Chatham mum Sally Jones was on a Pentagon kill list.

According to the Sunday Times, she now calls herself Sakinah Hussain, while her 10 year old son Jojo has adopted the Muslim name Hamza.

She called Britain and America "terrorist" nations and said she had become militant in response to the two nations' killing of Muslims - travelling to the Middle East at the end of 2013.

Jones - who posted a picture on Twitter of her dressed as a nun and holding a gun - and her son are now said to live in the IS stronghold Raqqa, where public beheadings and crucifixions are carried out.

She told the newspaper she was a good mother and had been hurt by claims she had abandoned her children - adding that her eldest son was 18 and decided to stay at home.

Computer hacker-turned jihadi Junaid Hussain pictured on Twitter with a rifle in his hands.

Her husband and friend Abdel-Majed Abdel Bary were not involved in the beheading of American journalists James Foley and Steven Sotloff, she said, while her previous threat to behead Christians was just a response to online abuse.

She also refuted claims by former neighbours that she had lived on benefits, saying she had worked as a saleswoman and make-up artist.

Jones is said to have once fronted an all-girl rock band in the 1990s and previously had an interest in black magic and witchcraft.

She is recently said to have warned: "You Christians all need beheading with a blunt knife and stuck on the railings at Raqqa... Come here I'll do it for you."

Chatham mum Sally Jones in a rock band in the early 1990s. Picture: YouTube

Former neighbours in Chatham have spoken of her chaotic lifestyle.

They described her as a "nightmare" who was always screaming and shouting and had previously believed she was a witch.